<template>
  <el-card class="box-card">
    <div slot="header" class="clearfix">
      <span>重置密码</span>
    </div>
    <!-- 表单 -->
    <el-form :model="pwdForm" :rules="pwdFormRules" ref="pwdFormRef" label-width="100px">
      <el-form-item label="原密码" prop="old_pwd">
        <el-input v-model="pwdForm.old_pwd" type="password"></el-input>
      </el-form-item>
      <el-form-item label="新密码" prop="new_pwd">
        <el-input v-model="pwdForm.new_pwd" type="password"></el-input>
      </el-form-item>
      <el-form-item label="确认新密码" prop="re_pwd">
        <el-input v-model="pwdForm.re_pwd" type="password"></el-input>
      </el-form-item>
      <el-form-item>
        <el-button type="primary" @click="changePwd">修改密码</el-button>
        <el-button @click="reForm">重置</el-button>
      </el-form-item>
    </el-form>
  </el-card>
</template>

<script>
export default {
  name: 'UserPwd',
  data() {

    // 自定义校验规则
    // 新旧密码不能相同
    const newOldPwd  = (rule,value,callback)=>{
      if(value===this.pwdForm.old_pwd){
        callback(new Error('新旧密码不能相同'))
      }else{
        callback()
      }
    }

    // 确认两次输入的新密码是否相同
    const rePwd = (rule,value,callback)=>{
      if(value!==this.pwdForm.new_pwd){
        callback(new Error('两次输入的新密码不一致'))
      }else{
        callback()
      }
    }

    return {
      // 表单的数据对象
      pwdForm: {
        old_pwd: '',
        new_pwd: '',
        re_pwd: ''
      },
      // 表单的验证规则对象
      pwdFormRules: {
        old_pwd: [
            {required:true,message:'请输入原密码',trigger:'blur'},
            {pattern:/^\S{6,15}$/,message:'请输入长度是6~16的非空字符串',trigger:'blur'}
        ],
        new_pwd: [
            {required:true,message:'请输入新密码',trigger:'blur'},
            {pattern:/^\S{6,15}$/,message:'请输入长度是6~16的非空字符串',trigger:'blur'},
            {validator:newOldPwd,trigger:'blur'}
        ],
        re_pwd: [
            {required:true,message:'请输入确认新密码',trigger:'blur'},
            {pattern:/^\S{6,15}$/,message:'请输入长度是6~16的非空字符串',trigger:'blur'},
            {validator:rePwd,trigger:'blur'}
        ]
      }
    }
  },
  methods:{
    // element-ui内置的重置表单  获取到元素 直接调用resetFields()方法
    reForm(){
      this.$refs.pwdFormRef.resetFields()
    },
    // 修改密码
    changePwd(){
      this.$refs.pwdFormRef.validate(async valid=>{
        if(!valid) return 
        const {data:res} = await this.$http.patch('/my/updatepwd',this.pwdForm)
        if(res.code!==0) return this.$message.error(res.message)
        this.$message.success(res.message)
        // 调用方法重置表单
        this.reForm()
      })
    }
  }
}
</script>

<style lang="less" scoped>
.el-form {
  width: 500px;
}
</style>
